Ruima Crankshaft +2.5mm Stroker (GY6)
Description: Ruima high-performance stroker crank for GY6, Buddy 150, and Blur 150. Increases standard 57.8mm stroke by 2.5mm. More displacement equals more power!
Temperature Modification May Be Required: You'll need to heat the aluminum crankcase area where the crankshaft bearing side will be placed, in order to fit immediately the freezing Ruima Crankshaft bearing side. Users assume full responsibility and risk doing so using this Ruima Crankshaft.
Include the following Crankshaft stroker.
• 1x Crankshaft L: 285mm / Stroke L: 57.8mm +2.5mm (2500-micron) = 60.3mm
• 1x Piston Wrist Pin Slot ID: 15mm
• 1x Flywheel Shaft Thread: M12 x 16mm
• 1x Flywheel Shaft Bearing: 56mm x 22mm x 15mm
• 1x Variator Shaft Thread: M12 x 16mm
• 1x Variator Shaft Splines: 19
• 1x Variator Shaft Bearing: 56mm x 22mm x 15mm
• 1x Made in Taiwan
• Fit 54mm Stud Spacing (A-Block)
• Fit 57mm Stud Spacing (B-Block)
• Fit Dowel Pin Set (8x14mm)
• Fit GY6 125/150cc+
• Optional: cut plastic fan shroud for best fitment
Supported Models: GY6 152QMI 157QMJ 161QMK 161QML Chinese Scooter, ATV, Genuine Buddy, Kymco, Ruckus, Vento
Item Weight & Product Dimensions:
• 6.4 pounds | 11.5" (L) x 5.25" (W) x 4.75" (H)